wp-includes/class-wp-customize-widgets.php:1240Tells the script loader to load the scripts and styles of custom blocks if the widgets block editor is enabled.
$is_block_editor_screenboolbool public function should_load_block_editor_scripts_and_styles( $is_block_editor_screen ) { if ( wp_use_widgets_block_editor() ) { return true; } return $is_block_editor_screen; }Introduced in 5.8.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/class-wp-customize-widgets.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.